And samuel edward beecher



(No Model.)

E. H. NEIMAN 8n S. E. BEBGHER ARTIFIciAL TEETH. N9. 513,818; PatentedJan; 30, 1894.

ml! uA'ncuAL umompumq COMPANY. Aanmu'ron. n. c.

UNITED STATES PATENT OFFICE.

ELI H. NEIMAN, OF YORK, AND SAMUEL EDWARD BEECHER, OF MILTON,PENNSYLVANIA; SAID BEEGHER ASSIGNOR TO SAID NEIMAN.

' ARTIFICIAL TOOTH.

SPECIFICATION forming part of Iaetters Patent No. 513,818, dated January30, 1894. Application filed December 29,1892. Serial No. 456.6%. (Nomodel.)

To all whom it may concern.-

Be it known that we, ELI H. NEIMAN, residing at York, in the county ofYork, and SAMUEL EDWARD BEECHER, residing at Milton, in the county ofNorthumberland, State of Pennsylvania, both citizens of the UnitedStates, have invented certain new and useful Improvementsin ArtificialTeeth; and'we do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

Ourinvention has relation to improvements in artificial teeth and itconsists in providing the same with headed pins adapted to engagedovetailed grooves vertically arranged in rear of the gum or burnedportion of the teeth and in combination therewith, a longitudinal grooveextending from one side of the teeth and in rear thereof to the otherside, whereby the plate, in connection, with the headed pins, is firmlyheld in position and prevented from accidental displacement, all as willbe herein after more fully explained and particularly pointed out in theappended claim.

The annexed drawings, to which reference is made, fully illustrates ourinvention, in which- Figure 1, representsavertical sectional view of ourdevice. .Fig. 2, is a longitudinal sectional view with the plateremoved. Fig. 3, is a rear view of the teeth, also with the plateremoved, showing our device and Fig. 4 is a detail view.

Referring by letter to the accompanying drawings, A, designatesartificial or false teeth, of which 01/ is the plate constructed ofrubber or other suitable material and b the teeth; 0 the compositionrepresenting the gums of the teeth and d d are the holding pins. On therear face of the portion c, the same is constructed with verticaldovetailed grooves e, the lower portion of which-is closed while theupper part of said grooves are left open to receive a correspondinglydovetailed head or enlargement f on one end of apin 01, while theopposite end thereof is provided with a head gand between which head andenlargement f, is a neck or shank it all for apurpose presentlyexplained. The rear face of the portion 0 is further provided with alongitudinal groove 2', providing a shoulder j, below the pinsaforesaid.

It will be seen from the above description and by reference to theannexed drawings that in constructing the portion a, the dovetailedgrooves are provided after which the dovetailed pins are insertedtherein, leaving the neck and head thereof projecting inwardly, when theplate is made to cover the entire pins and to project at the same timewithin the longitudinal groove 2', when said pins will prevent saidplate from a rearwardly movement from the portion 0 while the groove 2'prevents the same from displacement verti cally. Thus the combination ofthe two viz, the groove '5 and headed pins serves the excellent purposeof firmly securing the plate to the portion 0, thus providing durable,as well as inexpensive artificial teeth.

Having thus described our invention, what we claim is In artificialteeth, the vertical dovetailed grooves e open at the top to admit thepins and horizontal groovet'constructed in the portion 0 said verticalgrooves adapted to receive the pins 01, in combination with the plate a,substantially as described.

In testimony whereof we affix our signatures in presence of twowitnesses.

ELI H. NEIMAN. S. EDWARD BEECHER.

